linux-kernel - Re: [RFC][Patch v8 0/7] KVM: Guest Free Page Hinting

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Message-ID: <15c5689b-2960-bbf9-ae57-4694d31f5757@redhat.com>
Date:   Fri, 15 Feb 2019 10:33:48 +0100
From:   David Hildenbrand <david@...hat.com>
To:     "Wang, Wei W" <wei.w.wang@...el.com>,
        Nitesh Narayan Lal <nitesh@...hat.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "lcapitulino@...hat.com" <lcapitulino@...hat.com>,
        "pagupta@...hat.com" <pagupta@...hat.com>,
        "yang.zhang.wz@...il.com" <yang.zhang.wz@...il.com>,
        "riel@...riel.com" <riel@...riel.com>,
        "mst@...hat.com" <mst@...hat.com>,
        "dodgen@...gle.com" <dodgen@...gle.com>,
        "konrad.wilk@...cle.com" <konrad.wilk@...cle.com>,
        "dhildenb@...hat.com" <dhildenb@...hat.com>,
        "aarcange@...hat.com" <aarcange@...hat.com>
Subject: Re: [RFC][Patch v8 0/7] KVM: Guest Free Page Hinting

On 15.02.19 10:15, Wang, Wei W wrote:
> On Thursday, February 14, 2019 6:01 PM, David Hildenbrand wrote:
>> And how to preload without locking?
> 
> The memory is preload per-CPU. It's usually called outside the lock.

Right, that works as long as only a fixed amount of pages is needed. I
remember that working for some radix tree operations.

> 
> Best,
> Wei
> 


-- 

Thanks,

David / dhildenb